27693439279 has 12 divisors (see below), whose sum is σ = 30679597312. Its totient is φ = 24977604960.

The previous prime is 27693439273. The next prime is 27693439283. The reversal of 27693439279 is 97293439672.

It is not a de Polignac number, because 27693439279 - 2⁹ = 27693438767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27693439273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 885702 + ... + 916435.

Almost surely, 2^27693439279 is an apocalyptic number.

27693439279 is a deficient number, since it is larger than the sum of its proper divisors (2986158033).

27693439279 is a wasteful number, since it uses less digits than its factorization.

27693439279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802286 (or 1802275 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 61.

The spelling of 27693439279 in words is "twenty-seven billion, six hundred ninety-three million, four hundred thirty-nine thousand, two hundred seventy-nine".